CN2846869Y - Crankshaft flange of screw slot structure - Google Patents
Crankshaft flange of screw slot structure Download PDFInfo
- Publication number
- CN2846869Y CN2846869Y CN 200520124550 CN200520124550U CN2846869Y CN 2846869 Y CN2846869 Y CN 2846869Y CN 200520124550 CN200520124550 CN 200520124550 CN 200520124550 U CN200520124550 U CN 200520124550U CN 2846869 Y CN2846869 Y CN 2846869Y
- Authority
- CN
- China
- Prior art keywords
- crankshaft
- screw slot
- flange
- engine
- oil seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a crankshaft flange of a screw slot structure, which comprises a flange body, one end of the side surface of which is provided with a screw slot and spiral direction of the screw slot is opposite with the rotary direction of an engine. After the crankshaft flange of a screw slot structure is adopted, in the operating process of the engine, through backflow action of the screw slot, a great amount of lubricating oil can back flow to a timing gear chamber, and accordingly, sealing pressure of the front oil seal can be alleviated. Sealing effects of the front oil seal of the engine crankshaft are good. The utility model solves a staggering problem of oil leakage of the front seal of the engine crankshaft which exists for many years for manufacturing plants.
Description
Technical field
The utility model relates to a kind of crankshaft flange, the crankshaft flange of a kind of helical groove structure of more specifically saying so.
Background technique
Traditional engine crankshaft Front oil seal sealing configuration, only be to rely on Front oil seal lip and crankshaft flange to prevent the seepage of crankcase front end lubricant oil, increase along with the motor reinforcing degree, its flow rate of lubricating oil and oil pressure all increase thereupon, only rely on said structure can not solve the seepage of lubricant oil, therefore, engine crankshaft Front oil seal seepage oil has become the difficult problem of puzzlement manufacturer.In order to solve this difficult problem,, all do not receive satisfied effect though the machining accuracy and the assembly precision of correlated parts have improved in manufacturer.
Summary of the invention
The purpose of this utility model provides a kind of crankshaft flange that makes the helical groove structure of engine crankshaft Front oil seal good sealing effect.
In order to realize above-mentioned purpose, the crankshaft flange of the helical groove structure that is provided comprises flange body, and its structural feature is to be provided with spiral chute in the position, an end of flange body side, and this spiral fluted rotation direction is opposite with hand engine rotation.
Above-mentioned spiral fluted quantity is 3-5, slot pitch 3mm.
The flange of helical groove structure provided by the utility model, when assembling, will and the Front oil seal seat between have the matching gap of 0.2mm-0.4mm, it is indoor that timing gear can be flowed back to along spiral chute with the most lubricant oil of stream in the crankshaft flange spiral chute in this gap, remaining less amount of lubrication oil and oil gas are sealed by Front oil seal, these less amount of lubrication oil just are lubricated Front oil seal friction lip again, unnecessary lubricant oil then flows back to housing for timing gear along the little oilhole of Front oil seal seat, has guaranteed the reliability of Front oil seal sealing configuration.
Learn by above narration, adopt the crankshaft flange of helical groove structure provided by the utility model, in the process of engine operation, a large amount of lubricant oil has been back to housing for timing gear by spiral fluted backflow effect, alleviated the sealing load of Front oil seal, make engine crankshaft Front oil seal good sealing effect, solved the difficult problem that manufacturer exists for many years about engine crankshaft Front oil seal seepage oil.
Description of drawings
Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings, wherein:
Fig. 1 is the perspective view of the crankshaft flange of the described helical groove structure of embodiment;
Fig. 2 is to use the structural representation of engine crankshaft Front oil seal of the crankshaft flange of helical groove structure.
Among the figure: 1 is crank pulley, and 2 is vibration damper, and 3 is bent axle, and 4 is Front oil seal, and 5 is the Front oil seal seat, and 6 are crankshaft flange: 6-1 wherein is that flange body, 6-2 are spiral chute, and 7 is housing for timing gear, and 8 is gear.
Embodiment
With reference to accompanying drawing, the crankshaft flange of the described helical groove structure of embodiment, comprise flange body 6-1, its structural feature is to be provided with spiral chute 6-2 in the position, an end of flange body 6-1 side, the rotation direction of this spiral chute 62 is opposite with hand engine rotation, the quantity of spiral chute 6-2 is 3-5, slot pitch 3mm, and spiral fluted quantity has been drawn 4 among the figure.Other component and the assembly relation thereof of relevant engine crankshaft Front oil seal structure owing to be known technology, no longer are described in detail.
Claims (2)
1, a kind of crankshaft flange of helical groove structure comprises flange body (6-1), it is characterized in that being provided with spiral chute (6-2) in the position, an end of flange body (6-1) side, and the rotation direction of this spiral chute (6-2) is opposite with hand engine rotation.
2, the crankshaft flange of helical groove structure according to claim 1, the quantity that it is characterized in that spiral chute (6-2) are 3-5, slot pitch 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124550 CN2846869Y (en) | 2005-11-13 | 2005-11-13 | Crankshaft flange of screw slot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124550 CN2846869Y (en) | 2005-11-13 | 2005-11-13 | Crankshaft flange of screw slot structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846869Y true CN2846869Y (en) | 2006-12-13 |
Family
ID=37512292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520124550 Expired - Lifetime CN2846869Y (en) | 2005-11-13 | 2005-11-13 | Crankshaft flange of screw slot structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846869Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574029A (en) * | 2012-08-02 | 2014-02-12 | 上海大众汽车有限公司 | Flange sealing part for engine crankshaft |
-
2005
- 2005-11-13 CN CN 200520124550 patent/CN2846869Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574029A (en) * | 2012-08-02 | 2014-02-12 | 上海大众汽车有限公司 | Flange sealing part for engine crankshaft |
| CN103574029B (en) * | 2012-08-02 | 2016-03-30 | 上汽大众汽车有限公司 | A kind of engine crankshaft flange seal blocking piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061213 |
|
| EXPY | Termination of patent right or utility model |